Number Series - Important Formulae, Tricks and Shortcuts [Quantitative Aptitude]

Here are important formulas and shortcuts to solve problems related to Number Series. Basic knowledge
regarding solving number series questions is important for various competitive exams like IBPS,
SBI Bank PO, assistant, SSC exams, Railway exam, UPSC exams.

Type 3: Prime Number Series: {A prime number has only two factors i.e 1 and the number itself}

Case 1: Simple prime number series:

This type of series is consecutive prime number series.

Eg 1: 3, 5, 7, 11, 13, 17.......(Given series is a consecutive prime number series)Eg 2: 3, 5, 11, 19, 37,..........(Here 5 is first prime number after 3, 11 is second prime number after 5, 19 is third prime number after 11 and so on.)

Case 2: Prime number addition/ subtraction series:

In this type of series next number is addition or subtraction of prime number series.

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